Microchip Technology Inc., announced the expansion of its 16-bit dsPIC Digital Signal Controller (DSC) portfolio for digital power-conversion applications: dsPIC33FJ32GS406, dsPIC33FJ32GS606, dsPIC33FJ32GS608, dsPIC33FJ32GS610, dsPIC33FJ64GS406, dsPIC33FJ64GS606, dsPIC33FJ64GS608, dsPIC33FJ64GS610.These new DSCs provide up to four times the memory, compared to Microchip’s existing SMPS & Digital Power Conversion families. Additionally, these flexible DSCs can be configured for a variety of topologies, giving power-supply designers the complete freedom to optimize for specific product applications. The eight new DSCs offer up to 18 channels of Pulse-Width-Modulators (PWMs) with 1 nanosecond resolution, enabling an unprecedented number of completely independent digital control loops.
Implementing high-speed, precision digital control loops for digital power conversion applications requires a high-performance DSP engine, along with specialized digital power peripherals. Microchip’s 16-bit dsPIC33F ‘GS’ Series DSCs provide on-chip peripherals specifically designed for high-performance, digital power supplies. On-chip digital power peripherals include high-speed PWMs, ADCs and analog comparators. The newly expanded dsPIC33F ‘GS’ family supports applications such as induction cooking, uninterruptable power supplies, solar and pure sine-wave inverters, intelligent battery chargers, power factor correction, HID lighting, fluorescent lighting, LED lighting, and AC-DC and DC-DC power converters.
The eight new dsPIC33F ‘GS’ series digital-power DSCs enable digital control loops with 12 to 18 high-speed, 1 nanosecond (ns) resolution PWMs and one or two 10-bit, on-chip ADCs, providing 2 to 4 Million samples per second (MSPS) for low latency and high-resolution control. They range from 64 to 100 pins and 32 to 64 KB Flash memory. These DSCs feature interactive peripherals that both minimize the intervention of the processor and are able to handle the real-time needs of high-speed current-mode control.
Features
- CPU
- Up to 40 MIPS Operation (at 3.0-3.6V)
- 16 x 16 Fractional/Integer Hardware Multiply, Single Cycle Execution
- Single-Cycle Multiply and Accumulate
- 32-bit by 16-bit Hardware Divider
- C Compiler Optimized Instruction Set
- System
- Internal oscillator and Phase-Locked Loop (PLL) with 120 MHz VCO
- On-chip LDO Voltage Regulator
- JTAG Boundary Scan and Flash Memory Program Support
- Fail-Safe Clock Monitor – allows safe shutdown if clock fails
- Watchdog Timer with separate RC oscillator
- Power Managed Modes
- Run, Idle and Sleep modes
- Multiple, Switchable Clock Modes for Optimum Performance and Power Management
- High-Speed PWM Module Features
- Up to Nine PWM Generators with up to Eighteen Outputs
- Dead Time for Rising and Falling Edges
- Duty Cycle Resolution of 1.04 ns for Dead-Time, Phase Shift, and Frequency
- Supported PWM modes: Standard Edge-Aligned, True Independent Output, Complementary, Center-Aligned, Push-Pull, Multi-Phase, Variable Phase, Fixed Off-Time, Current Reset, and Current-Limit
- PWMxL, PWMxH Output Pin Swapping
- PWM4H, PWM4L Pins Remappable
- On-the-Fly PWM Frequency, Duty Cycle and Phase Shift Changes
- High-Speed Analog Comparator
- Up to Four Analog Comparators
- 20 ns response time
- 10-bit DAC for each analog comparator
- DACOUT pin to provide DAC output
- High-Speed 10-Bit ADC
- 10-Bit Resolution
- Up to 24 Input Channels Grouped into Six Conversion Pairs
- 4 Msps or 2 Msps Conversion rate
- Independent Trigger Source Section for each Analog Input Conversion Pair
- Peripherals
- UART Module with LIN and IrDA support
- SPI Module with FIFO
- I2C Modules with Master and Slave Modes
- ECAN Module
- Up to 4 16-bit Timer Modules
- Up to 4 Input Capture and 4 Output Compare / PWM
These devices offer features supporting common, multi-loop digital switch-mode power supplies (SMPS) and other digital power-conversion applications such as:
- AC to DC Converters
- DC to DC Converters
- Power Factor Correction (PFC)
- Uninterruptible power supply (UPS)
- Inverters
- Embedded Power-Supply Controllers
- Circuit Breakers, Arc Fault Detection
